用ponyORM重构get_today_article函数的原生SQL语句

app/Article.py

@@ -8,6 +8,7 @@ import hashlib
 from datetime import datetime
 from flask import Flask, request, redirect, render_template, url_for, session, abort, flash, get_flashed_messages
 from difficulty import get_difficulty_level_for_user, text_difficulty_level, user_difficulty_level
+from MyPony import *
 
 
 path_prefix = '/var/www/wordfreq/wordfreq/'
@@ -32,22 +33,20 @@ def get_article_body(s):
     return '\n'.join(lst)
 
 
+@db_session
 def get_today_article(user_word_list, visited_articles):
-    rq = RecordQuery(path_prefix + 'static/wordfreqapp.db')
     if visited_articles is None:
         visited_articles = {
             "index" : 0,  # 为 article_ids 的索引
             "article_ids": []  # 之前显示文章的id列表，越后越新
         }
     if visited_articles["index"] > len(visited_articles["article_ids"])-1:  # 生成新的文章，因此查找所有的文章
-        rq.instructions("SELECT * FROM article")
+        result = list(selectAllArticles())
     else:  # 生成阅读过的文章，因此查询指定 article_id 的文章
         if visited_articles["article_ids"][visited_articles["index"]] == 'null':  # 可能因为直接刷新页面导致直接去查询了'null'，因此当刷新的页面的时候，需要直接进行“上一篇”操作
             visited_articles["index"] -= 1
             visited_articles["article_ids"].pop()
-        rq.instructions('SELECT * FROM article WHERE article_id=%d' % (visited_articles["article_ids"][visited_articles["index"]]))
-    rq.do()
-    result = rq.get_results()
+        result = list(selectArticlesById(visited_articles["article_ids"][visited_articles["index"]]))
     random.shuffle(result)
 
     # Choose article according to reader's level

app/MyPony.py

@@ -0,0 +1,55 @@
+from pony.orm import *
+
+db = Database()
+
+
+# 数据库实体
+class Article(db.Entity):
+    _table_ = "article"  # table name
+    article_id = PrimaryKey(int, auto=True)
+    text = Optional(str)
+    source = Optional(str)
+    date = Optional(str)
+    level = Optional(str)
+    question = Optional(str)
+
+
+db.bind(provider='sqlite', filename='./static/wordfreqapp.db', create_db=True)
+db.generate_mapping(create_tables=True)
+# 打印SQL错误
+set_sql_debug(True)
+
+
+@db_session
+def selectAllArticles():
+    """
+    获取全部文章
+    """
+    articles = select(a for a in Article)
+    articles_list = []
+    for i in articles:
+        d = {"article_id": i.article_id,
+             "text": i.text,
+             "source": i.source,
+             "date": i.date,
+             "level": i.level,
+             "question": i.question}
+        articles_list.append(d)
+    return articles_list
+
+
+@db_session
+def selectArticlesById(id):
+    """
+    根据文章id搜索
+    """
+    article = Article.get(article_id=id)
+    li = []
+    d = {"article_id": article.article_id,
+         "text": article.text,
+         "source": article.source,
+         "date": article.date,
+         "level": article.level,
+         "question": article.question}
+    li.append(d)
+    return li

app/static/config.yml

@@ -7,7 +7,6 @@ css:
 js:
   head: # 在页面加载之前加载
     - ../static/js/jquery.js
-    - ../static/js/read.js
     - ../static/js/word_operation.js
   bottom: # 在页面加载完之后加载
     - ../static/js/fillword.js

app/static/js/fillword.js

@@ -1,5 +1,9 @@
 let isRead = true;
 let isChoose = true;
+let reader = window.speechSynthesis; // 全局定义朗读者，以便朗读和暂停
+let current_position = 0; // 朗读文本的当前位置
+let original_position = 0; // 朗读文本的初始位置
+let to_speak = ""; // 朗读的初始内容
 
 function getWord() {
     return window.getSelection ? window.getSelection() : document.selection.createRange().text;
@@ -7,7 +11,7 @@ function getWord() {
 
 function fillInWord() {
     let word = getWord();
-    if (isRead) Reader.read(word, inputSlider.value);
+    if (isRead) read(word);
     if (!isChoose) return;
     const element = document.getElementById("selected-words");
     element.value = element.value + " " + word;
@@ -15,17 +19,50 @@ function fillInWord() {
 
 document.getElementById("text-content").addEventListener("click", fillInWord, false);
 
-const sliderValue = document.getElementById("rangeValue");
-const inputSlider = document.getElementById("rangeComponent");
+function makeUtterance(str, rate) {
+    let msg = new SpeechSynthesisUtterance(str);
+    msg.rate = rate;
+    msg.lang = "en-US"; // TODO: add language options menu
+    msg.onboundary = ev => {
+        if (ev.name == "word") {
+            current_position = ev.charIndex;
+        }
+    }
+    return msg;
+}
+
+const sliderValue = document.getElementById("rangeValue"); // 显示值
+const inputSlider = document.getElementById("rangeComponent"); // 滑块元素
 inputSlider.oninput = () => {
-    let value = inputSlider.value;
+    let value = inputSlider.value; // 获取滑块的值
     sliderValue.textContent = value + '×';
+    if (!reader.speaking) return;
+    reader.cancel();
+    let msg = makeUtterance(to_speak.substring(original_position + current_position), value);
+    original_position = original_position + current_position;
+    current_position = 0;
+    reader.speak(msg);
 };
 
+function read(s) {
+    to_speak = s.toString();
+    original_position = 0;
+    current_position = 0;
+    let msg = makeUtterance(to_speak, inputSlider.value);
+    reader.speak(msg);
+}
+
 function onReadClick() {
     isRead = !isRead;
+    if (!isRead) {
+        reader.cancel();
+    }
 }
 
 function onChooseClick() {
     isChoose = !isChoose;
 }
+
+function stopRead() {
+    reader.cancel();
+}

app/static/js/read.js

@@ -1,35 +0,0 @@
-var Reader = (function() {
-    let reader = window.speechSynthesis;
-    let current_position = 0;
-    let original_position = 0;
-    let to_speak = "";
-
-    function makeUtterance(str, rate) {
-        let msg = new SpeechSynthesisUtterance(str);
-        msg.rate = rate;
-        msg.lang = "en-US";
-        msg.onboundary = ev => {
-            if (ev.name == "word") {
-                current_position = ev.charIndex;
-            }
-        }
-        return msg;
-    }
-
-    function read(s, rate) {
-        to_speak = s.toString();
-        original_position = 0;
-        current_position = 0;
-        let msg = makeUtterance(to_speak, rate);
-        reader.speak(msg);
-    }
-
-    function stopRead() {
-        reader.cancel();
-    }
-
-    return {
-        read: read,
-        stopRead: stopRead
-    };
-})();

app/static/js/word_operation.js

@@ -62,13 +62,6 @@ function delete_word(theWord) {
     });
 }
 
-function read_word(theWord) {
-    let to_speak = $("#word_" + theWord).text();
-    original_position = 0;
-    current_position = 0;
-    Reader.read(to_speak, inputSlider.value);
-}
-
 /* 
  * interface Word {
  *   word: string,
@@ -102,7 +95,6 @@ function wordTemplate(word) {
         <a class="btn btn-success" onclick="familiar('${word.word}')" role="button">熟悉</a>
         <a class="btn btn-warning" onclick="unfamiliar('${word.word}')" role="button">不熟悉</a>
         <a class="btn btn-danger" onclick="delete_word('${word.word}')" role="button">删除</a>
-        <a class="btn btn-info" onclick="read_word('${word.word}')" role="button">朗读</a>
     </p>`;
 }
 

app/templates/userpage_get.html

@@ -133,7 +133,6 @@
                     <a class="btn btn-success" onclick="familiar('{{ word }}')" role="button">熟悉</a>
                     <a class="btn btn-warning" onclick="unfamiliar('{{ word }}')" role="button">不熟悉</a>
                     <a class="btn btn-danger" onclick="delete_word('{{ word }}')" role="button">删除</a>
-                    <a class="btn btn-info" onclick="read_word('{{ word }}')" role="button">朗读</a>
                 </p>
             {% endfor %}
         </div>

app/wordfreqCMD.py

@@ -39,7 +39,7 @@ def file2str(fname):#文件转字符
 
 
 def remove_punctuation(s): # 这里是s是形参 (parameter)。函数被调用时才给s赋值。
-    special_characters = '\_©~<=>+/[]*&$%^@.,?!:;#()"“”—‘’{}|' # 把里面的字符都去掉
+    special_characters = '\_©~<=>+-/[]*&$%^@.,?!:;#()"“”—‘’{}|' # 把里面的字符都去掉
     for c in special_characters:
         s = s.replace(c, ' ') # 防止出现把 apple,apple 移掉逗号后变成 appleapple 情况
     s = s.replace('--', ' ')